Revert "Avoid creating weak cells for literal arrays that are empty of literals."

src/type-feedback-vector.cc

Index: src/type-feedback-vector.cc
diff --git a/src/type-feedback-vector.cc b/src/type-feedback-vector.cc
index 661aa2feac43c129745b8544930cc7b8e1ec9267..699cd08822ce87dfc40bc008e3603fb2cd9d8bc5 100644
--- a/src/type-feedback-vector.cc
+++ b/src/type-feedback-vector.cc
@@ -362,19 +362,11 @@ void TypeFeedbackVector::ClearAllKeyedStoreICs(Isolate* isolate) {
       int length = optimized_code_map->length();
       for (int i = SharedFunctionInfo::kEntriesStart; i < length;
            i += SharedFunctionInfo::kEntryLength) {
-        Object* lits =
-            optimized_code_map->get(i + SharedFunctionInfo::kLiteralsOffset);
-        TypeFeedbackVector* vector = nullptr;
-        if (lits->IsWeakCell()) {
-          WeakCell* cell = WeakCell::cast(lits);
-          if (cell->value()->IsLiteralsArray()) {
-            vector = LiteralsArray::cast(cell->value())->feedback_vector();
-          }
-        } else {
-          DCHECK(lits->IsLiteralsArray());
-          vector = LiteralsArray::cast(lits)->feedback_vector();
-        }
-        if (vector != nullptr) {
+        WeakCell* cell = WeakCell::cast(
+            optimized_code_map->get(i + SharedFunctionInfo::kLiteralsOffset));
+        if (cell->value()->IsLiteralsArray()) {
+          TypeFeedbackVector* vector =
+              LiteralsArray::cast(cell->value())->feedback_vector();
           vector->ClearKeyedStoreICs(shared);
         }
       }